Marine
VHF Radios - Both Fixed Mount and Portable - Are Required By the
Coast Guard on Most Vessels

Marine VHF
radio is
installed on all large ships and most motorized small craft. It is used
for a wide variety of purposes, including summoning rescue services and
communicating with harbours and marinas, and operates in the VHF
frequency range, between 156 to 174 MHz. Although it is widely used for
collision avoidance, its use for this purpose is contentious and is
strongly discouraged by some countries, including the UK.

Marine
VHF Radios - Both Fixed Mount and Portable - Are Required By the
Coast Guard on Most Vessels
Marine VHF
radio is
installed on all large ships and most motorized small craft. It is used
for a wide variety of purposes, including summoning rescue services and
communicating with harbours and marinas, and operates in the VHF
frequency range, between 156...